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(Article of periodic en Anglais - 2014)

Document title

Network concepts to describe channel importance and change in multichannel systems : test results for the Jamuna River, Bangladesh

Authors(s) and Affiliation(s)

MARRA W.A. (1) ; KLEINHANS M.G. (1) ; ADDINK E.A. (1) ;
(1) Dept. of Physical Geography, Fac. of Geosciences, Univ., Utrecht, PAYS-BAS

Abstract

The AA. developed a semi-automatic method to derive a chain-like directional network from images that represent the multi-channel river and to connect individual network elements through time. The Jamuna River was taken as an example with a series of Landsat TM and ETM+ images taken at irregular intervals between 1999 and 2004. They quantified the overall importance of individual channels in the entire network using a centrality property. Centrality showed that 3 reaches can be distinguished along the Jamuna with a different network character. Based on the centrality they calculated a weighted braiding index that represents the number of important channels in the network, which is about two in the Jamuna River and which is larger immediately after floods. It is concluded that the network measure centrality provides a novel characterization of river channel networks, highlighting properties and tendencies that have morphological significance

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2014, vol. 39, no6 [pp. 766-778]

Bibliographic references : 41 ref.

Collation : 15 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3482

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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